I have a small quantity of barrel dimpling jigs that I have made in all four sizes, .936, .875, .750, and .625. These will locate the dimple directly opposite the gas port for fool proof gas block alignment and a little extra security to keep the gas block from shifting. Because of the way jig's guide hole is drilled, I cannot recommend them being used for aligning a gas block with a top rail that will be used to hold the front sight because of possible slight misalignment, but for low profile gas blocks or gas blocks not used to hold a front sight, they are going to be more than close enough and IF there is any misalignment, you will not be able to see it. The reason I do not advise using this jig for front sight rail gas blocks is because IF there is mis-alignment, by the time you put a front sight on top of the gas block it could conceivably have a very small cant to it. I have not seen any cant on any of the barrels I have dimpled using low profile gas blocks but I cannot promise an absolutely perfect outcome if one is putting a front sight on top of the gas block.
Price is $15 shipped each
I only have:
4 in .936
3 in .875
2 in .625
None left in .750
They will be sold in order of "I'll take one" but be sure to specify what size you want and immediately follow up with an e-mail of your intent along with screen name so I can make sure to match up posting with email correctly. Payment via Pay-Pal (BigBoreHK@gmail.com) preferred for quicker shipping because any other form of payment will result in funds clearing the bank before the item will be shipped.
NOTIFY ME OF YOUR INTENT TO BUY BUT DO NOT SEND FUNDS UNTIL I TELL YOU
Instructions included. Buyer must provide own 5/32 drill bit for drilling the dimple.
Short version of instructions:
Use cone shaped setscrew to secure the jig to the barrel, using the gas port in the barrel for alignment. The cone shaped setscrew will enter the gas port and hold things in perfect alignment while drilling the dimple. Do NOT over tighten the setscrew. Tighten firmly but do not gorilla it.
Using a 5/32 drill bit, drill a small dimple in the barrel. Your choice if you want to just start the dimple then remove the jig to finish or mark your bit on how deep you want to drill. But it will be YOUR responsibility to not drill all the way through your barrel, unless you need a very expensive tomato stake. Thanks for looking.